Meet one of the newest members of the "Transformers: Age of Extinction" cast: A special race-inspired C7 Corvette Stingray, based on Chevrolet's upcoming 2014 production car. (Andrew Cooper / Paramount)

Meet one of the newest members of the "Transformers: Age of Extinction" cast: The rugged and reliable Hound, one of the Family of Medium Tactical Vehicles from Oshkosh Defense. (Andrew Cooper / Paramount Pictures)

A new poster has arrived for “Transformers: Age of Extinction,” the fourth franchise installment from blockbuster extremist Michael Bay, and it features Autobot leader Optimus Prime holding an enormous dagger.

The heroic battle-bot looks ready to spar with any alien cyborg who gets out of line.

“Age of Extinction,” which hits theaters June 27, will be a kind of reboot for the franchise, which has grossed $2.7 billion worldwide. Though Bay said in 2012 that “Age of Extinction” would be his last foray in the series, the upcoming Paramount vehicle is now viewed as the first entry in an intended new trilogy of “Transformers” films.

A new trailer for the film is due to arrive at midnight — look for the Dinobots, the prehistoric ragers who are new to the “Transformers” cinematic landscape.

“Age of Extinction” also ushers in a new human foil, Mark Wahlberg. The “Ted” star will take over as protagonist from Shia LaBeouf, who departed as the series’ primary human, Sam Witwicky, after “Transformers: Dark of the Moon” in 2011.

Wahlberg plays mechanic Cade Yeagar, a father and everyman who becomes embroiled in the high-stakes action that ensues when warring tribes of alien robots duke it out here on planet Earth.

Walhberg spoke with Hero Complex’s Chris Lee about the technical challenges of the role: “You’ve got eight Autobots talking to you at the same time. There’s nothing but a pole or a stick really there. You’ve got to believe and totally commit. The most difficult part of acting is when you look ridiculous and have to confront the risk of looking foolish. You’ve got to be on the whole time. You can’t phone it in.”

What do you think of the new poster? Does Optimus Prime look fit for battle? Leave your comments below.